Number of (n+2)X9 0..2 arrays with every 3X3 subblock having three strictly increasing elements in a row horizontally or vertically, exactly one way.

A204416

Number of (n+2)X9 0..2 arrays with every 3X3 subblock having three strictly increasing elements in a row horizontally or vertically, exactly one way.

Terms

    a(0) =2004465237a(1) =2826265830a(2) =3619976949a(3) =6016853259a(4) =8802512928a(5) =13168291392a(6) =27153833472a(7) =206114865408

External references